class_docstr: Base class for all DataFlow 
code: def get_data(self):
      return self.__iter__()
  
imports: import threading
  from abc import ABCMeta, abstractmethod
  import six
  from ..utils.utils import get_rng
label_desc: Use image node_id 4 for calling the DataFlow obj's underlying member method code with example usage: obj.get_data() and returns: self